Generate a post title and slug based on the content

generate_post_title_and_slug_from_content.php

<?php
/**
 * Generate a post title and slug from the content 
 */
function dk_generate_title_and_slug( $data ) {

    if( 'post' == $data['post_type'] && empty( $data['post_title'] ) ) {
	    
	    // Quick way to strip media (could do something like use media type to inform title)
	    $title = wp_trim_excerpt( $data['post_content'] ); 
	    
	    // Limit generated excerpt to 10 words instead of 55 by wp_trim_excerpt (could go with character length)
	    $title = wp_trim_words( $title, 10, '' ); 
	    
	    // Set the title and slug
	    $data['post_title'] = $title;
	    $data['post_name'] = sanitize_title( $title );
	    
    }

    return $data;

}
add_filter( 'wp_insert_post_data', 'dk_generate_title_and_slug' );